:root {
  color-scheme: light dark;

  --bg: #f6f7f9;
  --surface: #ffffff;
  --border: #e3e6ea;
  --text: #16191d;
  --muted: #6b7280;
  --up: #12805c;
  --down: #c0392b;
  --unknown: #8a8f98;
  --warn-bg: #fff5e6;
  --warn-border: #f0b357;
  --warn-text: #8a5a00;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101317;
    --surface: #171b21;
    --border: #272c34;
    --text: #e8eaed;
    --muted: #9aa1ac;
    --up: #35c48c;
    --down: #ef6f61;
    --unknown: #7c838e;
    --warn-bg: #2b2314;
    --warn-border: #7a5b1c;
    --warn-text: #f0c274;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 2.5rem 1.25rem;
  background: var(--bg);
  color: var(--text);
  font: 15px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}

.page {
  max-width: 62rem;
  margin: 0 auto;
}

.header h1 {
  margin: 0;
  font-size: 1.6rem;
  letter-spacing: -0.01em;
}

.subtitle {
  margin: 0.35rem 0 1.75rem;
  color: var(--muted);
}

.banner {
  margin: 0 0 1.25rem;
  padding: 0.75rem 1rem;
  border: 1px solid var(--warn-border);
  border-radius: 8px;
  background: var(--warn-bg);
  color: var(--warn-text);
}

.checks {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  overflow: hidden;
}

.checks th {
  padding: 0.7rem 1rem;
  border-bottom: 1px solid var(--border);
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-align: left;
  text-transform: uppercase;
}

.checks td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.checks tr:last-child td {
  border-bottom: none;
}

.check-row[data-mock] {
  opacity: 0.6;
}

.target-id {
  display: block;
  font-weight: 600;
}

.target-url {
  display: block;
  color: var(--muted);
  font-size: 0.82rem;
}

.state {
  display: inline-block;
  padding: 0.15rem 0.6rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
}

.state-up {
  background: color-mix(in srgb, var(--up) 15%, transparent);
  color: var(--up);
}

.state-down {
  background: color-mix(in srgb, var(--down) 15%, transparent);
  color: var(--down);
}

.state-unknown {
  background: color-mix(in srgb, var(--unknown) 15%, transparent);
  color: var(--unknown);
}

.footer {
  display: flex;
  flex-wrap: wrap;
  gap: 1.75rem;
  margin-top: 1.5rem;
  padding: 0 0.25rem;
  color: var(--muted);
  font-size: 0.82rem;
}

.footer-label {
  display: block;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.footer-value {
  font-family: ui-monospace, SFMono-Regular, "SF Mono", Menlo, monospace;
}

.error-page {
  padding-top: 4rem;
  text-align: center;
}

.error-page h1 {
  margin: 0;
  font-size: 3rem;
}

.back-link {
  color: inherit;
}